Big Skele Boss has mana drain and lightning AOE per drain

Tor Gul the Defiler (Big skeleton snek that pops up from a hole in the ground) in my last encounter had a mana drain and lightning damage modifier.

no big deal if you aren't melee unfortunately I am, and in order to get into melee range you need to enter the aura, cant get inside it because his hitbox is too large, plus... the big ass hole in the ground he pops up from. This makes him basically impossible to kill if you need to smack him in the face at all.

TL;DR Makes it drain your mana and deal damage in melee range, please remove it from his rotation of available modifiers.